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8143911: Reintegrate JEP 259: Stack-Walking API

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Co-authored-by: Brent Christian <brent.christian@oracle.com>
Co-authored-by: Daniel Fuchs <daniel.fuchs@oracle.com>
Co-authored-by: Hamlin Li <huaming.li@oracle.com>
Reviewed-by: coleenp, dfuchs, bchristi, psandoz, sspitsyn
This commit is contained in:
Mandy Chung 2015-11-24 14:59:17 -08:00
parent 7171a533ff
commit 2b732b223e
14 changed files with 1080 additions and 58 deletions
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63
hotspot/src/share/vm/classfile/javaClasses.inline.hpp
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@ -73,4 +73,67 @@ inline bool java_lang_invoke_DirectMethodHandle::is_instance(oop obj) {
return obj != NULL && is_subclass(obj->klass());
}
inline int Backtrace::merge_bci_and_version(int bci, int version) {
// only store u2 for version, checking for overflow.
if (version > USHRT_MAX || version < 0) version = USHRT_MAX;
assert((jushort)bci == bci, "bci should be short");
return build_int_from_shorts(version, bci);
}
inline int Backtrace::merge_mid_and_cpref(int mid, int cpref) {
// only store u2 for mid and cpref, checking for overflow.
assert((jushort)mid == mid, "mid should be short");
assert((jushort)cpref == cpref, "cpref should be short");
return build_int_from_shorts(cpref, mid);
}
inline int Backtrace::bci_at(unsigned int merged) {
return extract_high_short_from_int(merged);
}
inline int Backtrace::version_at(unsigned int merged) {
return extract_low_short_from_int(merged);
}
inline int Backtrace::mid_at(unsigned int merged) {
return extract_high_short_from_int(merged);
}
inline int Backtrace::cpref_at(unsigned int merged) {
return extract_low_short_from_int(merged);
}
inline int Backtrace::get_line_number(const methodHandle& method, int bci) {
int line_number = 0;
if (method->is_native()) {
// Negative value different from -1 below, enabling Java code in
// class java.lang.StackTraceElement to distinguish "native" from
// "no LineNumberTable". JDK tests for -2.
line_number = -2;
} else {
// Returns -1 if no LineNumberTable, and otherwise actual line number
line_number = method->line_number_from_bci(bci);
if (line_number == -1 && ShowHiddenFrames) {
line_number = bci + 1000000;
}
}
return line_number;
}
/*
* Returns the source file name of a given InstanceKlass and version
*/
inline Symbol* Backtrace::get_source_file_name(InstanceKlass* holder, int version) {
// Find the specific ik version that contains this source_file_name_index
// via the previous versions list, but use the current version's
// constant pool to look it up. The previous version's index has been
// merged for the current constant pool.
InstanceKlass* ik = holder->get_klass_version(version);
// This version has been cleaned up.
if (ik == NULL) return NULL;
int source_file_name_index = ik->source_file_name_index();
return (source_file_name_index == 0) ?
(Symbol*)NULL : holder->constants()->symbol_at(source_file_name_index);
}
#endif // SHARE_VM_CLASSFILE_JAVACLASSES_INLINE_HPP